"Ukraine has repeatedly reaffirmed its commitment to providing security guarantee in the territory which is controlled by the forces of the anti-terror operation," Perebiynis told reporters during a briefing.

If Russia decided to deliver its humanitarian aid through insurgent-controlled territory, the insurgents and Moscow would have to ensure the security of the cargo, Perebiynis said.

Last Tuesday, a 280-truck convoy carrying some 2,000 tons of relief supplies, including food, medication, sleeping bags and power generators, departed from Moscow to Lugansk in eastern Ukraine.

The convoy has been parked not far from the Ukrainian-Russian border since Thursday amid disagreements over how and where it should enter Ukraine.

Ukrainian authorities claimed that Russia refused to deliver the humanitarian aid across the checkpoints controlled by Ukraine, and has not presented information on the contents of the humanitarian aid.

In response, Moscow accused Kiev of procrastination in guaranteeing security of the convoy.

The Russian Foreign Ministry said Tuesday that Foreign Minister Sergei Lavrov spoke over phone with President Peter Maurer of the International Committee of the Red Cross (ICRC) on the humanitarian situation in eastern Ukraine.

"Lavrov expressed hope that this worrisome delay in granting security guarantees is not an attempt by Kiev or other forces to disrupt this crucial humanitarian action," the ministry said in a statement.

It said Lavrov and Maurer had agreed to take "energetic measures in the next few hours" to settle the issues regarding sooner delivery of the humanitarian aid to the southeastern regions of Donetsk and Lugansk.